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Lady Jane Grey Affair
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Lady Macbeth
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1. Metaphor A metaphor is a direct comparison between two unlike things, without using “like” or “as.” It suggests that one thing is another, helping to convey an idea in a more vivid or symbolic way. Example: • “Time is a thief.” • Here, time isn’t literally a thief, but it’s compared to one, suggesting that time steals moments of our lives. Purpose: Metaphors allow us to convey abstract ideas in concrete, impactful ways. ⸻ 2. Simile A simile compares two unlike things using the words “like” or “as.” It’s a softer form of metaphor that explicitly states the comparison. Example: • “Her eyes sparkled like diamonds.” • This compares her eyes to diamonds, emphasizing their brilliance and beauty. Purpose: Similes help readers visualize something by comparing it to something they already know, making descriptions more vivid. ⸻ 3. Personification Personification involves giving human characteristics to non-human things, animals, or abstract concepts. This helps to make the non-human elements more relatable and alive. Example: • “The wind whispered through the trees.” • The wind is given the human trait of whispering, making it seem like the wind is capable of communication. Purpose: Personification brings inanimate objects or abstract concepts to life, often adding emotional depth. ⸻ 4. Hyperbole A hyperbole is an exaggerated statement or claim not meant to be taken literally. It’s often used for emphasis or humor. Example: • “I’ve told you a million times!” • The speaker has not literally told the person a million times, but the exaggeration emphasizes how many times they have repeated the information. Purpose: Hyperbole is often used to emphasize a point or convey strong feelings, creating a dramatic effect. ⸻ 5. Alliteration Alliteration is the repetition of the same consonant sound at the beginning of several words in close succession. Example: • “Peter Piper picked a peck of pickled peppers.” • The repetition of the “p” sound makes this phrase catchy and rhythmic. Purpose: Alliteration adds musicality to writing and can be used to make phrases memorable. ⸻ 6. Onomatopoeia Onomatopoeia refers to words that imitate natural sounds. Example: • “The buzzing of bees filled the air.” • “Buzzing” imitates the sound made by bees, helping the reader hear the sound in their mind. Purpose: Onomatopoeia helps to bring a scene to life by making the language sound like the thing it describes. ⸻ 7. Oxymoron An oxymoron is a figure of speech that combines two contradictory terms to create a unique meaning or effect. Example: • “Deafening silence.” • Silence is usually associated with quiet, but the word “deafening” creates a striking contrast to show how overwhelming the silence can feel. Purpose: Oxymorons can highlight contrasts and complexities in emotions, situations, or concepts. ⸻ 8. Irony Irony is the use of words to convey a meaning that is the opposite of their literal meaning, often for humorous or emphatic effect. There are several types of irony: • Verbal Irony: Saying one thing but meaning another. (e.g., “What a beautiful day!” during a storm.) • Situational Irony: A situation where there is a discrepancy between what is expected to happen and what actually happens. (e.g., A fire station burns down.) • Dramatic Irony: When the audience knows something that the characters do not. (e.g., In Romeo and Juliet, the audience knows Juliet isn’t dead, but Romeo does not.) Purpose: Irony can create humor, suspense, or a deeper insight into human nature or society. ⸻ 9. Euphemism A euphemism is a polite or indirect expression used to replace words or phrases that might be considered harsh, blunt, or unpleasant. Example: • “He passed away” instead of “He died.” • This softens the impact of the message, making it less direct or upsetting. Purpose: Euphemisms are often used to address sensitive topics more delicately. ⸻ 10. Antithesis Antithesis is the juxtaposition of two opposing ideas or phrases to create contrast and highlight differences. Example: • “It was the best of times, it was the worst of times.” — A Tale of Two Cities by Charles Dickens. • The contrast between “best” and “worst” emphasizes the extremes of the situation. Purpose: Antithesis helps highlight differences, often making the contrast more memorable and impactful. ⸻ 11. Allusion An allusion is a brief reference to a person, place, thing, or event that the writer assumes the reader will recognize. It’s often a reference to historical events, literature, or popular culture. Example: • “He was a real Romeo with the ladies.” • This refers to the character Romeo from Shakespeare’s Romeo and Juliet, implying that the person is a passionate lover. Purpose: Allusions create deeper meaning by linking ideas to well-known concepts or historical events
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Lady Macbeth
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Lady Macbeth
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biology 2.1Unit 2.1: Mitosis and Meiosis Introduction By the end of this section, you should be able to: Define a chromosome. Define DNA as the genetic material. Define genes. Describe the structure of chromosomes. Describe the components of DNA. Define mitosis and describe its stages. Define meiosis and describe its stages. Relate the events of meiosis to the formation of sex cells. Compare mitosis and meiosis. Chromosomes, Genes, and DNA Almost all the cells of your body—except for mature red blood cells—contain a nucleus, which acts as the control center of the cell. The nucleus holds all the information needed to make a new cell and, ultimately, a new individual. Inside the nucleus are chromosomes, thread-like structures that store genetic information passed from parents to offspring. Chromosomes are made up of DNA (deoxyribonucleic acid), a molecule that carries the instructions needed to make all the proteins in your body. Many of these proteins are enzymes, which control the production of other chemicals and affect everything about how your body functions. Each species has a specific number of chromosomes: Humans have 46 chromosomes (23 pairs). Tomatoes have 24 chromosomes (12 pairs). Elephants have 56 chromosomes (28 pairs). Half of your chromosomes come from your mother, and the other half from your father. These chromosomes are arranged in homologous pairs, meaning they contain matching sets of genes. A karyotype is a special photograph that arranges chromosomes into their pairs. In humans, 22 pairs of chromosomes are called autosomes, which control most body functions. The 23rd pair is the sex chromosomes, which determine whether you are male or female: Females have two X chromosomes (XX). Males have one X and one Y chromosome (XY). DNA Structure DNA is a long, twisted molecule shaped like a double helix (a spiraled ladder). Each strand of DNA is made up of smaller molecules called nucleotides, which consist of: A phosphate group A sugar (deoxyribose) A nitrogen base The four nitrogen bases in DNA are: Adenine (A) → Always pairs with Thymine (T) Cytosine (C) → Always pairs with Guanine (G) Genes are small segments of DNA that carry instructions for making proteins. The sequence of these bases acts like a biological code, directing the cell to create specific proteins. In 1953, James Watson and Francis Crick, using data from Rosalind Franklin’s X-ray photographs, discovered the double-helix structure of DNA. Their discovery led to a huge increase in genetic research, including the Human Genome Project, which mapped all human genes. Mitosis (Cell Division for Growth and Repair) All body cells (somatic cells) divide using mitosis, a type of cell division that creates two identical daughter cells. Mitosis is essential for: Growth (producing new cells). Tissue repair (replacing damaged or old cells). Asexual reproduction (producing offspring with identical DNA). Stages of Mitosis Interphase The cell prepares for division by copying its DNA. Chromosomes are not visible under a microscope. Prophase Chromosomes condense and become visible. The nuclear membrane breaks down. Metaphase Chromosomes line up in the center of the cell. Spindle fibers attach to each chromosome. Anaphase The spindle fibers pull the sister chromatids apart to opposite ends of the cell. Telophase A new nuclear membrane forms around each set of chromosomes. The cell is almost ready to split. Cytokinesis The cytoplasm divides, forming two identical daughter cells. Mitosis is constantly occurring in areas like your skin and bone marrow, where new cells are needed regularly. Meiosis (Cell Division for Reproduction) Unlike mitosis, meiosis occurs only in the reproductive organs (testes in males, ovaries in females) and produces gametes (sperm and egg cells). Gametes have half the number of chromosomes (haploid, n=23) so that when fertilization occurs, the new cell has the correct chromosome number (diploid, 2n=46). Stages of Meiosis Meiosis consists of two rounds of cell division, resulting in four non-identical cells. Meiosis I: Prophase I – Chromosomes pair up and exchange genetic material (crossing over). Metaphase I – Chromosome pairs line up in the center of the cell. Anaphase I – Chromosome pairs separate and move to opposite ends of the cell. Telophase I & Cytokinesis – The cell splits into two haploid daughter cells. Meiosis II (similar to mitosis): 5. Prophase II – Chromosomes condense again. 6. Metaphase II – Chromosomes line up in the center. 7. Anaphase II – Sister chromatids separate and move to opposite sides. 8. Telophase II & Cytokinesis – Four unique haploid gametes are formed. Each gamete is genetically different due to crossing over and random chromosome distribution. Mitosis vs. Meiosis: Key Differences Importance of Mitosis and Meiosis Mitosis ensures that cells grow, repair damage, and replace old cells. Meiosis allows genetic diversity, which is essential for evolution and survival. Summary Chromosomes carry genetic information in the form of DNA. Genes are sections of DNA that code for proteins. Mitosis produces two identical daughter cells for growth and repair. Meiosis creates four non-identical sex cells for reproduction. Mitosis ensures genetic stability, while meiosis introduces genetic diversity
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